fabric
Version:
Object model for HTML5 canvas, and SVG-to-canvas parser. Backed by jsdom and node-canvas.
31 lines • 1.06 kB
JavaScript
const e={average:`
precision highp float;
uniform sampler2D uTexture;
varying vec2 vTexCoord;
void main() {
vec4 color = texture2D(uTexture, vTexCoord);
float average = (color.r + color.b + color.g) / 3.0;
gl_FragColor = vec4(average, average, average, color.a);
}
`,lightness:`
precision highp float;
uniform sampler2D uTexture;
uniform int uMode;
varying vec2 vTexCoord;
void main() {
vec4 col = texture2D(uTexture, vTexCoord);
float average = (max(max(col.r, col.g),col.b) + min(min(col.r, col.g),col.b)) / 2.0;
gl_FragColor = vec4(average, average, average, col.a);
}
`,luminosity:`
precision highp float;
uniform sampler2D uTexture;
uniform int uMode;
varying vec2 vTexCoord;
void main() {
vec4 col = texture2D(uTexture, vTexCoord);
float average = 0.21 * col.r + 0.72 * col.g + 0.07 * col.b;
gl_FragColor = vec4(average, average, average, col.a);
}
`};export{e as fragmentSource};
//# sourceMappingURL=grayscale.min.mjs.map